Sert Casting Jig 21g

Sert Casting Jig 21g

Unlock explosive casting distance and deadly attraction with the Sert Casting Jig 21g. Widely regarded as an all-round casting master for UK sea fishing, this compact, highly streamlined metal jig is an essential addition to any saltwater lure angler’s tackle box. Whether you are targeting hard-fighting bass in the surf, pollock over deep-water reefs, or filling a feathers rig with mackerel from a local pier, this jig is built to deliver results when other lures fall short.

Weighing in at 21g, it hits the absolute sweet spot for standard UK spinning rods. Its aerodynamically optimized, tail-weighted profile cuts through brutal coastal headwinds like a bullet, allowing you to reach distant sandbars, current creases, and feeding baitfish schools that are completely inaccessible with standard hardbaits or soft plastics.

Technical Specifications

• Weight: 21g — the gold-standard versatile weight for maximum distance on standard light-to-medium spinning outfits.

• Profile: Slim, hydrodynamic baitfish profile designed to mimic sandeels, sprats, and herring.

• Action: High-frequency erratic flutter on the drop with a tight, realistic swimming action on a straight retrieve.

• Hooks: Equipped with ultra-sharp, saltwater-treated treble hooks designed to penetrate instantly and resist corrosion.

• Finish: Highly reflective, durable holographic foils with realistic 3D eyes to trigger aggressive predatory strikes even in overcast or choppy water conditions.

• Target Species: Sea Bass, Pollock, Coalfish, Mackerel, Garfish, and Sea Trout.

Where to Use This Product

• Beach & Surf Casting: Punch your lure way past the crashing shore break into the deeper, offshore gullies where big bass patrol.

• Pier, Groyne & Breakwater Fishing: The ultimate “grab-and-go” lure for summer mackerel, garfish, and pollock sessions. It drops rapidly through tidal currents to reach fish feeding deep against structure.

• Rocky Headlands & Deep Water Marks: Cast out over deep reef structures and let the jig flutter down. It is deadly for targeting big, aggressive pollock and coalfish using a “sink and draw” retrieval method.

• Estuaries & Tidal Races: Work the jig rapidly through fast-moving water columns to intercept passing predators chasing migrating baitfish schools.

Gerry’s Pro Tip: “The Sert 21g Jig is an absolute weapon, but don’t just chuck it out and wind it straight back in. While a straight crank works great for mackerel, big bass and pollock are suckers for a jig on the drop. Give the rod a few sharp upward sweeps to make the jig dart upwards, then let it flutter back down on a slack line. Nine times out of ten, the take will happen on the fall. Pair this with a 15lb fluorocarbon leader to give the lure a completely stealthy presentation in clear water.”

Frequently Asked Questions

What rod and line setup is best for casting this 21g jig?

This jig performs at its absolute best on a 8ft to 9ft spinning rod with a casting rating around 10–40g or 15–50g. Pair it with a 3000 or 4000-sized spinning reel loaded with 15lb to 20lb braided mainline. This thin line choice maximizes the aerodynamic design of the jig, giving you truly mind-blowing casting distances.

Can this jig be used from a boat or kayak?

Yes, absolutely. While it is a master shore-casting lure, its heavy, compact nature means it works brilliantly when jigged vertically from a boat or kayak over shallow reefs, sandbanks, or around bridge pilings in up to 30–40 feet of water.

How do I prevent the hooks from rusting after a saltwater session?

While the hooks feature a high-quality saltwater coating, the UK sea environment is incredibly harsh. After every trip, simply rinse the jig under a freshwater tap and let it dry completely before popping it back into your lure box. This simple habit prevents salt crusting and keeps your hooks needle-sharp for your next outing.